Icons present in this folder are mostly icons from Nuvola icons set by David Vignoni:
* Nuvola_apps_agent.png
* Nuvola_apps_kgpg.png
* Nuvola_filesystems_folder_home.png
* Nuvola_apps_email.png
Those files are distributed under GNU Lesser General Public License. Its text may be found in LICENSE file.

Other files included are:
* Recycling_symbol.svg (by Krdan Ielalir, public domain)
* Symbol_support_vote.svg (by Zachary Harden, public domain)